EP2427469B1 - Process for the preparation of ruthenium metathesis complex catalysts - Google Patents
Process for the preparation of ruthenium metathesis complex catalysts Download PDFInfo
- Publication number
- EP2427469B1 EP2427469B1 EP10718134.9A EP10718134A EP2427469B1 EP 2427469 B1 EP2427469 B1 EP 2427469B1 EP 10718134 A EP10718134 A EP 10718134A EP 2427469 B1 EP2427469 B1 EP 2427469B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkyl
- aryl
- hydrogen
- independently
- rucl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000002360 preparation method Methods 0.000 title claims description 5
- 239000003054 catalyst Substances 0.000 title description 8
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 title description 4
- 238000005649 metathesis reaction Methods 0.000 title description 4
- 229910052707 ruthenium Inorganic materials 0.000 title description 4
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 59
- 239000001257 hydrogen Substances 0.000 claims description 42
- 229910052739 hydrogen Inorganic materials 0.000 claims description 42
- 125000003118 aryl group Chemical group 0.000 claims description 41
- -1 1-adamantyl Chemical group 0.000 claims description 34
- 150000002431 hydrogen Chemical class 0.000 claims description 27
- RWRDLPDLKQPQOW-UHFFFAOYSA-N tetrahydropyrrole Substances C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 claims description 25
- DHCWLIOIJZJFJE-UHFFFAOYSA-L dichlororuthenium Chemical compound Cl[Ru]Cl DHCWLIOIJZJFJE-UHFFFAOYSA-L 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 claims description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 13
- 150000002367 halogens Chemical class 0.000 claims description 13
- 125000006552 (C3-C8) cycloalkyl group Chemical group 0.000 claims description 11
- 239000003446 ligand Substances 0.000 claims description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 125000004104 aryloxy group Chemical group 0.000 claims description 9
- 125000004916 (C1-C6) alkylcarbonyl group Chemical group 0.000 claims description 8
- 125000004739 (C1-C6) alkylsulfonyl group Chemical group 0.000 claims description 8
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 8
- 125000004738 (C1-C6) alkyl sulfinyl group Chemical group 0.000 claims description 7
- 125000006700 (C1-C6) alkylthio group Chemical group 0.000 claims description 7
- 125000003601 C2-C6 alkynyl group Chemical group 0.000 claims description 7
- 125000005110 aryl thio group Chemical group 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 125000005843 halogen group Chemical group 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 125000004658 aryl carbonyl amino group Chemical group 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 239000003849 aromatic solvent Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 239000002243 precursor Substances 0.000 claims description 5
- 125000004454 (C1-C6) alkoxycarbonyl group Chemical group 0.000 claims description 4
- 125000003320 C2-C6 alkenyloxy group Chemical group 0.000 claims description 4
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 claims description 4
- 125000005842 heteroatom Chemical group 0.000 claims description 4
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910006069 SO3H Inorganic materials 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 3
- 125000004657 aryl sulfonyl amino group Chemical group 0.000 claims description 3
- 150000008282 halocarbons Chemical class 0.000 claims description 3
- 125000001072 heteroaryl group Chemical group 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000004845 (C1-C6) alkylsulfonylamino group Chemical group 0.000 claims description 2
- 125000004391 aryl sulfonyl group Chemical group 0.000 claims description 2
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 125000000446 sulfanediyl group Chemical group *S* 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 23
- 125000004432 carbon atom Chemical group C* 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 0 CCN(CC)C(C(C)Oc1c(C=*)cccc1)=O Chemical compound CCN(CC)C(C(C)Oc1c(C=*)cccc1)=O 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- 125000003545 alkoxy group Chemical group 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- YMWUJEATGCHHMB-DICFDUPASA-N dichloromethane-d2 Chemical compound [2H]C([2H])(Cl)Cl YMWUJEATGCHHMB-DICFDUPASA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 150000005840 aryl radicals Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 229960004132 diethyl ether Drugs 0.000 description 3
- 239000012044 organic layer Substances 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- PPJJVKUJVWRDAQ-UHFFFAOYSA-N 2-(2-ethenylphenoxy)-1-pyrrolidin-1-ylpropan-1-one Chemical compound C1CCCN1C(=O)C(C)OC1=CC=CC=C1C=C PPJJVKUJVWRDAQ-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000012317 TBTU Substances 0.000 description 2
- CLZISMQKJZCZDN-UHFFFAOYSA-N [benzotriazol-1-yloxy(dimethylamino)methylidene]-dimethylazanium Chemical compound C1=CC=C2N(OC(N(C)C)=[N+](C)C)N=NC2=C1 CLZISMQKJZCZDN-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 125000004448 alkyl carbonyl group Chemical group 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- AVQQQNCBBIEMEU-UHFFFAOYSA-N 1,1,3,3-tetramethylurea Chemical class CN(C)C(=O)N(C)C AVQQQNCBBIEMEU-UHFFFAOYSA-N 0.000 description 1
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- RUKVGXGTVPPWDD-UHFFFAOYSA-N 1,3-bis(2,4,6-trimethylphenyl)imidazolidine Chemical group CC1=CC(C)=CC(C)=C1N1CN(C=2C(=CC(C)=CC=2C)C)CC1 RUKVGXGTVPPWDD-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- 125000004206 2,2,2-trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 1
- YQTCQNIPQMJNTI-UHFFFAOYSA-N 2,2-dimethylpropan-1-one Chemical group CC(C)(C)[C]=O YQTCQNIPQMJNTI-UHFFFAOYSA-N 0.000 description 1
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 1
- NAADBKOUMIMVHO-UHFFFAOYSA-N 2-bromo-1-pyrrolidin-1-ylpropan-1-one Chemical compound CC(Br)C(=O)N1CCCC1 NAADBKOUMIMVHO-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- XMUKFPYNEZCBSO-UHFFFAOYSA-N C=Cc(cccc1)c1OCC(N1CCCC1)=O Chemical compound C=Cc(cccc1)c1OCC(N1CCCC1)=O XMUKFPYNEZCBSO-UHFFFAOYSA-N 0.000 description 1
- WDYQHXHZGLDMOV-ZZXKWVIFSA-N CC(C(N)=O)Oc1c(/C=C/C)cccc1 Chemical compound CC(C(N)=O)Oc1c(/C=C/C)cccc1 WDYQHXHZGLDMOV-ZZXKWVIFSA-N 0.000 description 1
- SCTUCFGFXUSYHY-UHFFFAOYSA-N CC(C)(C(N1CCCC1)=O)Oc1c(C=C)cccc1 Chemical compound CC(C)(C(N1CCCC1)=O)Oc1c(C=C)cccc1 SCTUCFGFXUSYHY-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- DTQVDTLACAAQTR-UHFFFAOYSA-M Trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-M 0.000 description 1
- 125000004656 alkyl sulfonylamino group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002635 aromatic organic solvent Substances 0.000 description 1
- 125000005129 aryl carbonyl group Chemical group 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000000051 benzyloxy group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])O* 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 description 1
- 125000004705 ethylthio group Chemical group C(C)S* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000005980 hexynyl group Chemical group 0.000 description 1
- PQPVPZTVJLXQAS-UHFFFAOYSA-N hydroxy-methyl-phenylsilicon Chemical compound C[Si](O)C1=CC=CC=C1 PQPVPZTVJLXQAS-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 125000006216 methylsulfinyl group Chemical group [H]C([H])([H])S(*)=O 0.000 description 1
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005981 pentynyl group Chemical group 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- PEKLRBDLHMDDCS-UHFFFAOYSA-M potassium;2-ethenylphenolate Chemical compound [K+].[O-]C1=CC=CC=C1C=C PEKLRBDLHMDDCS-UHFFFAOYSA-M 0.000 description 1
- 125000001325 propanoyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000010898 silica gel chromatography Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000005415 substituted alkoxy group Chemical group 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- 150000003613 toluenes Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0046—Ruthenium compounds
Definitions
- the invention relates to a novel process for the preparation of Ruthenium metathesis catalysts of the formula
- Ruthenium metathesis catalysts have been widely applied in the synthesis of macrocyclic drug compounds (see for example the PCT Publication WO 2005/037214 or PCT Publication WO 2007/015824 ).
- PCT Publication WO 2005/016944 describes a process for the preparation of ester compounds of the formula by conversion of preligands of the formula with a Ru-complex of the formula
- Object of the present invention therefore is to provide a technically feasible manufacturing process to the catalysts of general formula I.
- L has the meaning of a neutral ligand selected from wherein R 7 and R 8 independently of each other are C 1-6 -alkyl, aryl, C 2-6 - alkenyl or 1-adamantyl and R 9a-d are independently of each other hydrogen, C 1-6 -alkyl, C 2-6 - alkenyl or aryl, or R 9b and R 9c or R 9a and R 9d taken together form a-(CH 2 ) 4 -bridge; or R 9a and R 9d in formula 2s both have the meaning of halogen; R a1 , R a2 and R a3 independently of each other are C 1-6 -alkyl, C 3-8 -cycloalkyl, aryl, heteroaryl or R a1 and R a2 or R a2 and R a3 or R a1 and R a3 taken together form a 1,5;
- C 1-6 -alkyl refers to a branched or straight-chain monovalent saturated aliphatic hydrocarbon radical of one to six carbon atoms, preferably one to four carbon atoms. This term is further exemplified by radicals as methyl, ethyl, n-propyl, isopropyl, n-butyl, s-butyl, t-butyl and pentyl or hexyl and its isomers.
- C 2-6 -alkenyl refers to a branched or straight-chain monovalent unsaturated aliphatic hydrocarbon radical of two to six carbon atoms, preferably two to four carbon atoms. This term is further exemplified by radicals as vinyl, propenyl, butenyl, pentenyl and hexenyl and their isomers. Preferred alkenyl radical is vinyl.
- C 2-6 -alkynyl refers to a branched or straight-chain monovalent unsaturated aliphatic hydrocarbon radical of two to six carbon atoms, preferably two to four carbon atoms. This term is further exemplified by radicals as ethynyl, propynyl, butynyl, pentynyl or hexynyl their isomers.
- C 3-8 -cycloalkyl refres to a cycloalkyl group containing from 3 to 8 carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl.
- halogen-C 1-6 -alkyl refers to a halogen substituted C 1-6 -alkyl radical wherein halogen has the meaning as above.
- Preferred "halogen-C 1-6 -alkyl" radicals are the fluorinated C 1-6 -alkyl radicals such as CF 3 , CH 2 CF 3 , CH(CF 3 ) 2 , CH(CH 3 )(CF 3 ) or C 4 F 9 .
- C 1-6 -alkoxy refers to a branched or straight-chain monovalent saturated aliphatic hydrocarbon radical of one to six carbon atoms, preferably 1 to 4 carbon atoms attached to an oxygen atom.
- alkoxy are methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy and hexyloxy. Preferred are the alkoxy groups specifically exemplified herein.
- the alkyl chain of the alkoxy group can optionally be substituted, particularly mono-, di-or tri-substituted by alkoxy groups as defined above, preferably methoxy, or ethoxy or by aryl groups, preferably phenyl.
- Preferred substituted alkoxy group is the benzyloxy group.
- C 1-6 -alkyl carbonyl refers to C 1-6 -alkyl substituted carbonyl group, preferably to a C 1-4 -alkycarbonyl group. It includes for example acetyl, propanoyl, butanoyl or pivaloyl. Preferred alkyl carbonyl group is acetyl.
- C 1-6 -alkylthio refers to the group C 1-6 -alkyl-S-, preferably C 1-4 -alkyl-S-, e.g. methylthio or ethylthio. Preferred are the alkylthio groups specifically exemplified herein.
- arylthio refers to a group aryl-S-, preferably to phenylthio.
- C 1-6 -alkylsulfonyl refers to a C 1-6 -alkyl substituted sulfonyl group, preferably to methylsulfonyl.
- C 1-6 -alkylsulfinyl refers to a C 1-6 -alkyl substituted sulfinyl group, preferably to methylsulfinyl.
- SO 2 - aryl refers to a sulfonyl substituted aryl radical.
- Preferred SO 2 -aryl radical is SO 2 -phenyl.
- SO 2 -NR'R refers to a sulfonyl group substituted with an amino group NR'R" wherein R' and R" independently of each other have the meaning of hydrogen or C 1-6 -alkyl or R' and R" together with the N atom form a cycle, e.g. - (CH 2 ) 4 - or -(CH) 4 -.
- Preferred SO 2 -NR'R" radical is SO 2 -N(CH 3 ) 2 .
- the term "mono- or di-C 1-6 -alkyl-amino” refers to an amino group, which is mono- or disubstituted with C 1-6 -alkyl, preferably C 1-4 -alkyl.
- a mono-C 1-6 -alkyl-amino group includes for example methylamino or ethylamino.
- the term "di-C 1-6 -alkyl-amino” includes for example dimethylamino, diethylamino or ethylmethylamino.
- Preferred are the mono- or di-C 1-4 -alkylamino groups specifically exemplified herein.
- di-C 1-6 -alkyl-amino includes ring systems wherein the two alkyl groups together with the nitrogen atom to which they are attached form a 4 to 7 membered heterocycle which also may carry one further hetero atom selected from nitrogen, oxygen or sulfur.
- aryl alone or in combination with other groups, relates to a phenyl or naphthyl group, which can optionally be mono-, di-, tri- or multiply-substituted by halogen, hydroxy, CN, halogen-C 1-6 -alkyl, NO 2 , NH 2 , N(H,alkyl), N(alkyl) 2 , carboxy, aminocarbonyl, alkyl, alkoxy, alkylcarbonyl, C 1-6 -alkylsulfonyl, SO 2 -aryl, SO 3 H, SO 3 -alkyl, SO 2 -NR'R", aryl and/or aryloxy.
- Preferred aryl group usually is phenyl, however the preference for aryl may differ as indicated hereinafter for certain substituents.
- aryloxy relates to an aryl radical attached to an oxygen atom.
- aryl has the meaning as defined above.
- Preferred aryloxy group is phenyloxy.
- arylalkyl relates to an aryl radical attached to an alkyl group.
- aryl has the meaning as defined above.
- Preferred arylalkyl group is benzyl.
- aryl carbonyl refers to an aryl radical attached to a carbonyl group
- aryl carbonyl amino refers to an aryl carbonyl radical attached to an amino group
- halogen refers to a fluorine, chlorine, bromine or iodine atom, preferably to a chlorine atom.
- Starting compound for the process of the present invention is the Ru precursor compound of formula II wherein X 1 , X 2 , Y 2 , Y 3 , R 4a , R 4b , R 4c , R 4d , R 4e and L are as defined above.
- the ligand L is, as outlined above a neutral ligand selected from wherein R 7 and R 8 independently of each other are C 1-6 -alkyl, aryl, C 2-6 - alkenyl or 1-adamantyl and R 9a-d are independently of each other hydrogen, C 1-6 -alkyl, C 2-6 -alkenyl or aryl, or R 9b and R 9c or R 9a and R 9a taken together form a-(CH 2 ) 4 -bridge; or R 9a and R 9d in formula 2s both have the meaning of halogen, preferably of chlorine; R a1 , R a2 and R a3 independently of each other are C 1-6 -alkyl, C 3-8 -cycloalkyl, aryl, heteroaryl or R a1 and R a2 or R a2 and R a3 or R a1 and R a3 taken together form a 1,5-bridged cyclooctyl group.
- R 7 and R 8 are C 1-6 -alkyl, 1-adamantyl, a phenyl group which is di- or tri-substituted with C 1-6 -alkyl or naphthyl which is di- or tri-substituted with C 1-6 -alkyl.
- R 7 and R 8 more preferably have the meaning of t-butyl, 1-adamantyl, isopropyl, 2,6-diisopropylphenyl, 2,7-diisopropylnaphthyl or 2,4,6-trimethylphenyl, most preferably 2,4,6-trimethylphenyl or 2,7-diisopropylnaphthyl.
- R 9a and R 9c are methyl or phenyl and R 9b and R 9d are hydrogen, or R 9a and R 9c or R 9b and R 9d are taken together to form a -(CH 2 ) n - bridge with n having the meaning of 5 or 6. It is hereby understood that if chiral carbon atoms are present, both the racemic and the enantiomerically pure form are comprised.
- R 9a-d are hydrogen.
- R a1 , R a2 and R a3 independently of each other are C 1-6 -alkyl, C 3-8 -cycloalkyl or phenyl.
- R a1 , R a2 and R a3 independently of each other stand for cyclohexyl, cyclopentyl, isopropyl and phenyl.
- Suitable representatives of ligands L of formula 2t are Cy 3 P, iPr 3 P, Cyp 3 P or Ph 3 P wherein Cy stands for cyclohexyl, Cyp for cyclopentyl and iPr for isopropyl.
- L is wherein R 7 and R 8 are as described above.
- anionic ligand X 1 and X 2 a halogenide or a pseudo halogenide such as cyanide, a rhodanide, a cyanate, an isocycanate, acetate or trifluoroacetate may be selected.
- Preferred anionic ligand for X 1 and X 2 is a halogenide, whereas chloro is the most preferred anionic ligand.
- Y 2 and Y 3 are preferably taken together to form a cycle of the type with G being hydrogen or aryl, preferably phenyl.
- R 4a , R 4b , R 4c , R 4d , R 4e independently of each other, have the meaning of hydrogen, C 1-6 -alkyl, and halogen, whereas hydrogen and methyl, particularly hydrogen are even more preferred.
- the compounds of formula II can be prepared in accordance with the disclosure of D. Burtscher, C. Lexer, K. Mauster, R. Winde, R. Karch, C. Slugovc, Journal of Polymer Sciences, Part A: Polymer Chemistry, 2008, 46, 4630-4635 ).
- Neolyst M31 from Umicore AG & Co. KG, Rodenbacher Clice 4, 63457 Hanau-Wolfgang, Germany.
- R 1 , R 2 , R 3' , R 3" , Y 1 and a,b,c,d are as defined above and wherein R x and R y independently of each other denote hydrogen, C 1-6 -alkyl optionally substituted by one or more halogen atoms or aryl optionally substituted by one or more halogen atoms or by C 1-6 -alkyl can be prepared following the scheme below:
- the preligands of formula III can be prepared by standard methods of the organic synthesis, e.g. by treatment of the phenol building block with the 2-halo amide in DMF with potassium carbonate and cesium carbonate as bases (as reported in M. Bieniek et al, Journal of Organometallic Chemistry, 2006, 691, 5289 ) or in the presence of sodium hydroxide and a phase transfer agent (as reported in M. Halpern et al, Synthesis, 1979, 177 ).
- the preligands of formula III can be prepared by coupling of a carboxylic acid building block with an amine in the presence of a substituted tetramethyluronium salt such as TBTU (2-(1H-benzotriazol-1-yl)-1,1,3,3,-tetramethyluronium tetrafluoroborate) ( G.R. Pettit et al, J. Nat. Prod. 1999, 62, 409 ) or HBTU (O-(1-Benzotriazolyl)-N,N,N',N'-tetramethyluronium hexafluorophosphate ( A. Speicher et al, J. Prakt. Chem. 1998, 340, 581 ).
- a substituted tetramethyluronium salt such as TBTU (2-(1H-benzotriazol-1-yl)-1,1,3,3,-tetramethyluronium tetrafluoroborate) ( G.R. Pettit
- Y 1 is preferably hydrogen.
- the preferred meaning for c is hydrogen, halogen, nitro, C 1-6 -alkylcarbonyl amino, aryl carbonyl amino, aryl sulfonyl amino, alkyl sulfonyl amino, halogen-C 1-6 -alkyl sulfonyl amino, SO 2 -NR'R" wherein R' and R" independently of each other have the meaning of hydrogen, C 1-6 -alkyl, aryl or R' and R" together with the N atom form a cycle.
- c means hydrogen, Cl, nitro or SO 2 -NR'R".
- R 1 and R 2 independently of each other are hydrogen, C 1-6 -alkyl or
- R 1 and R 2 together with the N atom form a 6 member cycle which contains oxygen as additional hetero atom.
- R 1 and R 2 independently of each other are hydrogen or C 1-6 -alkyl.
- R 3' nd R 3" independently of each other preferably are hydrogen or C 1-6 -alkyl, more preferably hydrogen or methyl.
- R x and R y independently of each other preferably are hydrogen or C 1-6 -alkyl, more preferably hydrogen or methyl.
- Preferred preligands of formula III are selected from
- the conversion is usually performed in an inert organic solvent such as in an aromatic solvent, a halogenated aromatic solvent, a halogenated hydrocarbon and mixtures thereof or in a mixture of said solvents with an aliphatic hydrocarbon.
- an inert organic solvent such as in an aromatic solvent, a halogenated aromatic solvent, a halogenated hydrocarbon and mixtures thereof or in a mixture of said solvents with an aliphatic hydrocarbon.
- Suitable aromatic organic solvents are benzene, toluene or mesitylene and suitable halogenated aromatic solvents are polyfluorinated benzenes or toluenes.
- Useful halogenated hydrocarbons are for example dichloromethane or dichloroethane.
- the solvents may be used as single solvent or as a mixture of different solvents.
- Suitable aliphatic hydrocarbon co-solvents can be selected from pentane, hexane or heptane.
- Preferred inert organic solvent is toluene.
- the reaction can as a rule be performed at a reaction temperature of 0°C to 100°C, preferably at 40°C to 80°C, ideally under inert gas atmosphere.
- the desired compound of formula I can be isolated from the reaction mixture applying methods known to the skilled in the art, usually by filtering off the product and by washing the precipitate with a suitable organic solvent such as with toluene, hexane, pentane and diethyl ether or with mixtures thereof.
- a suitable organic solvent such as with toluene, hexane, pentane and diethyl ether or with mixtures thereof.
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Description
-
- Ruthenium metathesis catalysts have been widely applied in the synthesis of macrocyclic drug compounds (see for example the
PCT Publication WO 2005/037214 orPCT Publication WO 2007/015824 ). - It is thus important that commercially feasible pathways are available for the synthesis of these catalysts.
-
PCT Publication WO 2005/016944 describes a process for the preparation of ester compounds of the formula - Object of the present invention therefore is to provide a technically feasible manufacturing process to the catalysts of general formula I.
- The object has been achieved with the process of the present invention as outlined below.
- The process for the preparation of compounds of formula I
L has the meaning of a neutral ligand selected from
R9a-d are independently of each other hydrogen, C1-6-alkyl, C2-6- alkenyl or aryl, or R9b and R9c or R9a and R9d taken together form a-(CH2)4-bridge;
or R9a and R9d in formula 2s both have the meaning of halogen;
Ra1, Ra2 and Ra3 independently of each other are C1-6-alkyl, C3-8-cycloalkyl, aryl, heteroaryl or Ra1 and Ra2 or Ra2 and Ra3 or Ra1 and Ra3 taken together form a 1,5-bridged cyclooctyl group;
X1 and X2 independently of each other are anionic ligands;
Y1 is hydrogen, C1-6-alkyl, C3-8-cycloalkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkoxy, C2-6-alkenyloxy, C2-6-alkynyloxy, aryloxy, C1-6-alkoxycarbonyl, C1-6-alkylthio, aryl, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl;
a, b, c and d independently of each other have the meaning of hydrogen, C1-6-alkyl, halogen-C1-6-alkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkoxy, C2-6-alkenyloxy, C2-6-alkynyloxy, C1-6-alkylcarbonyl, aryl, hydroxy, aryloxy, nitro, C1-6-alkoxycarbonyl, amino, mono-C1-6-alkyl-or di-C1-6-alkylamino, halogen, thio, C1-6-alkylthio, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl, arylsulfonyl, SO3H, C1-6-alkylcarbonyl amino, aryl carbonyl amino, C1-6-alkyl sulfonyl amino, aryl sulfonyl amino, halogen-C1-6-alkyl sulfonyl amino, SO3-C1-6-alkyl or OSi(C1-6-alkyl)3 and SO2-NR'R" wherein R' and R" independently of each other have the meaning of hydrogen, aryl or C1-6-alkyl or R' and R" together with the N atom form a cycle;
R1 and R2 independently of each other are hydrogen, C1-6-alkyl, C3-8-cycloalkyl, aryl, aryl-C1-6-alkyl or
R1 and R2 together with the N atom form a 5 to 8 member cycle which may contain nitrogen, oxygen or sulfur as additional hetero atom;
R3' and R3" independently of each other are hydrogen, C1-6-alkyl, C3-8-cycloalkyl, aryl, aryl-C1-6-alkyl,
comprises the conversion of a Ru precursor compound of the formula II
Y2 and Y3 independently of each other are hydrogen, C1-6-alkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkylthio, aryl, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl,
or Y2 and Y3 taken together form a cycle of the type
or
Y2 and Y3 together form a cumulenyl group of the type
with a preligand of the formula III
Rx and Ry independently of each denote hydrogen, C1-6-alkyl optionally substituted by one or more halogen atoms or aryl optionally substituted by one or more halogen atoms or by C1-6-alkyl. - The following definitions are set forth to illustrate and define the meaning and scope of the various terms used to describe the invention herein.
- The term "C1-6-alkyl", alone or in combination with other groups, refers to a branched or straight-chain monovalent saturated aliphatic hydrocarbon radical of one to six carbon atoms, preferably one to four carbon atoms. This term is further exemplified by radicals as methyl, ethyl, n-propyl, isopropyl, n-butyl, s-butyl, t-butyl and pentyl or hexyl and its isomers.
- The term "C2-6-alkenyl", alone or in combination with other groups, refers to a branched or straight-chain monovalent unsaturated aliphatic hydrocarbon radical of two to six carbon atoms, preferably two to four carbon atoms. This term is further exemplified by radicals as vinyl, propenyl, butenyl, pentenyl and hexenyl and their isomers. Preferred alkenyl radical is vinyl.
- The term "C2-6-alkynyl", alone or in combination with other groups, refers to a branched or straight-chain monovalent unsaturated aliphatic hydrocarbon radical of two to six carbon atoms, preferably two to four carbon atoms. This term is further exemplified by radicals as ethynyl, propynyl, butynyl, pentynyl or hexynyl their isomers.
- The term "C3-8-cycloalkyl" group refres to a cycloalkyl group containing from 3 to 8 carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl.
- The term "halogen-C1-6-alkyl" refers to a halogen substituted C1-6-alkyl radical wherein halogen has the meaning as above. Preferred "halogen-C1-6-alkyl" radicals are the fluorinated C1-6-alkyl radicals such as CF3, CH2CF3, CH(CF3)2, CH(CH3)(CF3) or C4F9.
- The term "C1-6-alkoxy" refers to a branched or straight-chain monovalent saturated aliphatic hydrocarbon radical of one to six carbon atoms, preferably 1 to 4 carbon atoms attached to an oxygen atom. Examples of "alkoxy" are methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy and hexyloxy. Preferred are the alkoxy groups specifically exemplified herein.
- The alkyl chain of the alkoxy group can optionally be substituted, particularly mono-, di-or tri-substituted by alkoxy groups as defined above, preferably methoxy, or ethoxy or by aryl groups, preferably phenyl. Preferred substituted alkoxy group is the benzyloxy group.
- The term "C1-6-alkyl carbonyl" refers to C1-6-alkyl substituted carbonyl group, preferably to a C1-4-alkycarbonyl group. It includes for example acetyl, propanoyl, butanoyl or pivaloyl. Preferred alkyl carbonyl group is acetyl.
- The term "C1-6-alkylthio" refers to the group C1-6-alkyl-S-, preferably C1-4-alkyl-S-, e.g. methylthio or ethylthio. Preferred are the alkylthio groups specifically exemplified herein.
- The term "arylthio" refers to a group aryl-S-, preferably to phenylthio.
- The term "C1-6-alkylsulfonyl" refers to a C1-6-alkyl substituted sulfonyl group, preferably to methylsulfonyl.
- The term "C1-6-alkylsulfinyl" refers to a C1-6-alkyl substituted sulfinyl group, preferably to methylsulfinyl.
- The term "SO2- aryl" refers to a sulfonyl substituted aryl radical. Preferred SO2-aryl radical is SO2-phenyl.
- The term "SO2-NR'R" " refers to a sulfonyl group substituted with an amino group NR'R" wherein R' and R" independently of each other have the meaning of hydrogen or C1-6-alkyl or R' and R" together with the N atom form a cycle, e.g. - (CH2)4- or -(CH)4-. Preferred SO2-NR'R" radical is SO2-N(CH3)2.
- The term "mono- or di-C1-6-alkyl-amino" refers to an amino group, which is mono- or disubstituted with C1-6-alkyl, preferably C1-4-alkyl. A mono-C1-6-alkyl-amino group includes for example methylamino or ethylamino. The term "di-C1-6-alkyl-amino" includes for example dimethylamino, diethylamino or ethylmethylamino. Preferred are the mono- or di-C1-4-alkylamino groups specifically exemplified herein. It is hereby understood that the term "di-C1-6-alkyl-amino" includes ring systems wherein the two alkyl groups together with the nitrogen atom to which they are attached form a 4 to 7 membered heterocycle which also may carry one further hetero atom selected from nitrogen, oxygen or sulfur.
- The term "aryl", alone or in combination with other groups, relates to a phenyl or naphthyl group, which can optionally be mono-, di-, tri- or multiply-substituted by halogen, hydroxy, CN, halogen-C1-6-alkyl, NO2, NH2, N(H,alkyl), N(alkyl)2, carboxy, aminocarbonyl, alkyl, alkoxy, alkylcarbonyl, C1-6-alkylsulfonyl, SO2-aryl, SO3H, SO3-alkyl, SO2-NR'R", aryl and/or aryloxy. Preferred aryl group usually is phenyl, however the preference for aryl may differ as indicated hereinafter for certain substituents.
- The term "aryloxy" relates to an aryl radical attached to an oxygen atom. The term "aryl" has the meaning as defined above. Preferred aryloxy group is phenyloxy.
- The term "arylalkyl" relates to an aryl radical attached to an alkyl group. The term "aryl" has the meaning as defined above. Preferred arylalkyl group is benzyl.
- The term "aryl carbonyl " refers to an aryl radical attached to a carbonyl group, whereas the term "aryl carbonyl amino" refers to an aryl carbonyl radical attached to an amino group.
- The term "halogen" refers to a fluorine, chlorine, bromine or iodine atom, preferably to a chlorine atom.
-
- The ligand L is, as outlined above a neutral ligand selected from
R9a-d are independently of each other hydrogen, C1-6-alkyl, C2-6-alkenyl or aryl, or R9b and R9c or R9a and R9a taken together form a-(CH2)4-bridge;
or R9a and R9d in formula 2s both have the meaning of halogen, preferably of chlorine;
Ra1, Ra2 and Ra3 independently of each other are C1-6-alkyl, C3-8-cycloalkyl, aryl, heteroaryl or Ra1 and Ra2 or Ra2 and Ra3 or Ra1 and Ra3 taken together form a 1,5-bridged cyclooctyl group. - In a preferred embodiment R7 and R8 are C1-6-alkyl, 1-adamantyl, a phenyl group which is di- or tri-substituted with C1-6-alkyl or naphthyl which is di- or tri-substituted with C1-6-alkyl.
- R7 and R8 more preferably have the meaning of t-butyl, 1-adamantyl, isopropyl, 2,6-diisopropylphenyl, 2,7-diisopropylnaphthyl or 2,4,6-trimethylphenyl, most preferably 2,4,6-trimethylphenyl or 2,7-diisopropylnaphthyl.
- In a preferred embodiment R9a and R9c are methyl or phenyl and R9b and R9d are hydrogen, or R9a and R9c or R9b and R9d are taken together to form a -(CH2)n- bridge with n having the meaning of 5 or 6. It is hereby understood that if chiral carbon atoms are present, both the racemic and the enantiomerically pure form are comprised.
- In a further preferred embodiment R9a-d are hydrogen.
- In a preferred embodiment Ra1, Ra2 and Ra3 independently of each other are C1-6-alkyl, C3-8-cycloalkyl or phenyl.
- In a more preferred embodiment Ra1, Ra2 and Ra3 independently of each other stand for cyclohexyl, cyclopentyl, isopropyl and phenyl.
- Suitable representatives of ligands L of formula 2t are Cy3P, iPr3P, Cyp3P or Ph3P wherein Cy stands for cyclohexyl, Cyp for cyclopentyl and iPr for isopropyl.
-
- As anionic ligand X1 and X2 a halogenide or a pseudo halogenide such as cyanide, a rhodanide, a cyanate, an isocycanate, acetate or trifluoroacetate may be selected. Preferred anionic ligand for X1 and X2 is a halogenide, whereas chloro is the most preferred anionic ligand.
-
- Preferably R4a, R4b, R4c, R4d, R4e independently of each other, have the meaning of hydrogen, C1-6-alkyl, and halogen, whereas hydrogen and methyl, particularly hydrogen are even more preferred.
- The compounds of formula II can be prepared in accordance with the disclosure of D. Burtscher, C. Lexer, K. Mereiter, R. Winde, R. Karch, C. Slugovc, Journal of Polymer Sciences, Part A: Polymer Chemistry, 2008, 46, 4630-4635).
-
- The preligands of the formula III
Rx and Ry independently of each other denote hydrogen, C1-6-alkyl optionally substituted by one or more halogen atoms or aryl optionally substituted by one or more halogen atoms or by C1-6-alkyl
can be prepared following the scheme below: - According to the pathway a) of scheme 1, the preligands of formula III can be prepared by standard methods of the organic synthesis, e.g. by treatment of the phenol building block with the 2-halo amide in DMF with potassium carbonate and cesium carbonate as bases (as reported in M. Bieniek et al, Journal of Organometallic Chemistry, 2006, 691, 5289) or in the presence of sodium hydroxide and a phase transfer agent (as reported in M. Halpern et al, Synthesis, 1979, 177).
- Alternatively, according to the pathway b) of scheme 1, the preligands of formula III can be prepared by coupling of a carboxylic acid building block with an amine in the presence of a substituted tetramethyluronium salt such as TBTU (2-(1H-benzotriazol-1-yl)-1,1,3,3,-tetramethyluronium tetrafluoroborate) (G.R. Pettit et al, J. Nat. Prod. 1999, 62, 409) or HBTU (O-(1-Benzotriazolyl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (A. Speicher et al, J. Prakt. Chem. 1998, 340, 581).
- Preferred substituent definitions in the preligand of formula III are outlined below.
- Y1 is preferably hydrogen.
- The preferred meaning of a, b and d is hydrogen.
- The preferred meaning for c is hydrogen, halogen, nitro, C1-6-alkylcarbonyl amino, aryl carbonyl amino, aryl sulfonyl amino, alkyl sulfonyl amino, halogen-C1-6-alkyl sulfonyl amino, SO2-NR'R" wherein R' and R" independently of each other have the meaning of hydrogen, C1-6-alkyl, aryl or R' and R" together with the N atom form a cycle.
- More preferably c means hydrogen, Cl, nitro or SO2-NR'R".
- In a preferred embodiment R1 and R2 independently of each other are hydrogen, C1-6-alkyl or
- R1 and R2 together with the N atom form a 6 member cycle which contains oxygen as additional hetero atom.
- Still more preferred R1 and R2 independently of each other are hydrogen or C1-6-alkyl.
- R3' nd R3" independently of each other preferably are hydrogen or C1-6-alkyl, more preferably hydrogen or methyl.
- Rx and Ry independently of each other preferably are hydrogen or C1-6-alkyl, more preferably hydrogen or methyl.
-
- Even more preferred are the preligands of formula IIIe or IIIf.
- The conversion is usually performed in an inert organic solvent such as in an aromatic solvent, a halogenated aromatic solvent, a halogenated hydrocarbon and mixtures thereof or in a mixture of said solvents with an aliphatic hydrocarbon.
- Suitable aromatic organic solvents are benzene, toluene or mesitylene and suitable halogenated aromatic solvents are polyfluorinated benzenes or toluenes. Useful halogenated hydrocarbons are for example dichloromethane or dichloroethane. The solvents may be used as single solvent or as a mixture of different solvents.
- Suitable aliphatic hydrocarbon co-solvents can be selected from pentane, hexane or heptane.
- Preferred inert organic solvent is toluene.
- The reaction can as a rule be performed at a reaction temperature of 0°C to 100°C, preferably at 40°C to 80°C, ideally under inert gas atmosphere.
- The desired compound of formula I can be isolated from the reaction mixture applying methods known to the skilled in the art, usually by filtering off the product and by washing the precipitate with a suitable organic solvent such as with toluene, hexane, pentane and diethyl ether or with mixtures thereof.
- The following compounds of formula I are preferred representatives of Ruthenium Metathesis Complex Catalysts which can be prepared in accordance with the present invention.
D [RuCl2(=CH(o-OCH(Me)CONEt2)Ph)(ImH2Mes)] E [RuCl2(=CH(o-OCH(Me)CONH2)Ph)(ImH2Mes)] F [RuCl2(=CH(o-OCH(Me)CO-N Morpholine)Ph)(ImH2Mes)] G [RuCl2(=CH(o-OCH(Me)CONHPh)Ph)(ImH2Mes)] J [RuCl2(=CH(o-OCH(Me)CO-N Pyrrolidine)Ph)(ImH2Mes)] K [RuCl2(=CH(o-OCH(Me)CO-N Pyrrolidine)Ph)(PCy3)] L [RuCl2(=CH(o-OCH(Me)CO-N Pyrrolidine)Ph)(SIPrNap)] M [RuCl2(=CH(o-OCMe2CO-N-Pyrrolidine)Ph)(ImH2Mes)] N [RuCl2(=CH(o-OCH2CO-N Pyrrolidine)Ph)(ImH2Mes)] -
- r.t. = room temperature
- ImH2Mes = 1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene
- RP column = reverse phase column
- Mes = 2,4,6-trimethylphenyl
-
- (4:1 mixture of E/Z-isomers, prepared according to D. Arlt, K. Grela et al, J. Am. Chem. Soc. 2006, 128, 13652-13653) in dioxane, 11 ml (20.0 mmol) of a 2M aqueous sodium hydroxide solution was added and the reaction mixture was stirred for 16 h at room temperature. To the reaction mixture, 50 ml of water and 100 ml of tert.-butyl methyl ether were added. The organic layer was washed with 40 ml of water. After the pH of the combined aqueous layers was adjusted with 25% aqueous hydrochloric acid to a value of 1, 150 ml of dichloromethane was added. The organic layer was washed with 100 ml of brine, dried over sodium and evaporated to dryness at 40°C/10 mbar to yield 0.50 g (99% yield) of the title compound as a 3:1 mixture of E/Z-isomers with >99.9% purity (GC-area%) as white crystals. (GC method as described in Example 7. Retention times: Methyl 2-[((Z)-2-propenyl)-phenoxy]-propanoate 12.2 min, methyl 2-[((E)-2-propenyl)-phenoxy]-propanoate 12.9 min, 2-[((Z)-2-propenyl)-phenoxy]-propionic acid 13.3 min, 2-[((E)-2-propenyl)-phenoxy]-propionic acid 14.0 min).
Mp.: 96°C. MS: 206.0 (M+). -
- To a solution 1.92 ml (23.0 mmol) of pyrrolidine in 200 ml of N,N-dimethylformamide, 4.02 ml (23.0 mmol) of N,N-diisopropylethylamine, 1.00 g (4.6 mmol) of 2-[((E,Z)-2-propenyl)-phenoxy]-propionic acid (3:1 mixture of E/Z-isomers) and 1.92 g (5.8 mmol) of O-benzotriazol-1-yl-N,N,N',N'-tetramethyluronium tetrafluoroborate (TBTU) was added and the reaction mixture stirred for 2 h at room temperature. To the reaction mixture 200 ml of water and 400 ml ethyl acetate were added. The organic layer was separated, washed with 100 ml of water, dried over sodium sulfate and evaporated to dryness at 40°C/10 mbar. The crude title product was purified by silica gel chromatography (heptane/ethyl acetate 3:1) to yield 0.69 g (57% yield) of the title compound as a 4:1 mixture of E/Z-isomers with 98.1 % purity (GC-area%) as a white powder. (GC method: Column HP-5, 5% phenyl methyl siloxane, 30 m x 0.32 mm, df: 0.25 µm; injector temp.: 250°C; detector temp.: 250°C; oven temp.: 50°C to 300° (10°C/min), then 300 °C for 5 min ;Retention times: 2-[((Z)-2-propenyl)-phenoxy]-propanoic acid 13.9 min, 2-[((E)-2-propenyl)-phenoxy]-propanoic acid 14.0 min, 2-[((Z)-2-propenyl)-phenoxy]-1-pyrrolidine-1-yl-propan-1-one 18.0 min, 2-[((E)-2-propenyl)-phenoxy]-1-pyrrolidine-1-yl-propan-1-one 18.4 min).
MS: 260.0 (M+H+). -
- To a solution of 6.35 g (40.1 mmol) potassium 2-vinylphenolate in 110 ml of water (pH adjusted at 14 by addition of KOH) was added under argon 150 ml of toluene, 0.65 g (2.0 mmol) of tetrabutylammonium bromide and 11.54 g (50.16 mmol) of 2-bromo-1-pyrrolidin-1-yl-propan-1-one. The two-phase mixture was stirred vigorously over night at 45°C. After this time the organic phase was removed, washed with water, 4 M sodium hydroxide aqueous solution, 1 M hydrochloric acid solution and water, dried (sodium sulfate) and evaporated to dryness. Crystallization of the residue from warm heptane (200 ml) afforded the title compound as a white powder (7.0 g, 70.5% yield) with melting point of 85-86°C.
MS: 246.1496 (M+H)+, 268.1317 (M+Na)+. -
- A mixture of 21.0 g (27.69 mmol) of [RuCl2(3-phenylidenyl-1-iden)(ImH2Mes)(pyridine)] and 7.48 g (30.46 mmol) of 1-pyrrolidin-1-yl-2-(2-vinylphenoxy)-propan-1-one in 230 ml of toluene was stirred for 2 h at 65°C under argon. The reaction mixture (a suspension) was cooled with an icebath, the precipitate was filtered off and washed with an ice-cold mixture of toluene, hexane and diethylether. The filter cake was dried at room temperature in vacuo for 20 h to afford 17.8 g of the title compound (90.6% yield) as a green powder.
Anal. calcd. for C35H43Cl2N3O2Ru: C, 59.23; H, 6.11; N, 5.92, Cl 9.99. Found: C, 59.63; H, 6.52; N, 5.70. Ru content: 14.03%. 1H-NMR (CD2Cl2): characteristic signal at 16.5 ppm (Ru=CH). -
- A mixture of 3.00 g (3.96 mmol) of [RuCl2(3-phenylidenyl-1-iden)(ImH2Mes)(pyridine)] and 1.16 g (4.35 mmol) of 2-[((E,Z)-2-propenyl)-phenoxy]-1-pyrrolidine-1-yl-propan-1-one in 50 ml of toluene was stirred for 4 h at 60°C under argon. The reaction mixture (a suspension) was cooled with an icebath, the precipitate was filtered off and washed with an ice-cold mixture of toluene, pentane and diethylether. The filter cake was dried at room temperature in vacuo for 20 h to afford 2.38 g of the title compound (84.8% yield) as a green powder.
Anal. calcd. for C35H43Cl2N3O2Ru: C, 59.23; H, 6.11; N, 5.92, Cl 9.99. Found: C, 60.12; H, 6.06; N, 5.52. Ru content: 14.50%. 1 H-NMR (CD2Cl2): characteristic signal at 16.5 ppm (Ru=CH).
Claims (8)
- Process for the preparation of compounds of formula I
L has the meaning of a neutral ligand selected from
R9a-d are independently of each other hydrogen, C1-6-alkyl, C2-6- alkenyl or aryl, or R9b and R9c or R9a and R9d taken together form a-(CH2)4-bridge;
or R9a and R9d in formula 2s both have the meaning of halogen;
R4c, Ra2 and Ra2 independently of each other are C1-6-alkyl, C3-8-cycloalkyl, aryl, heteroaryl or Ra1 and Ra2 or Ra2 and Ra3 or Ra1 and Ra3 taken together form a 1,5-bridged cyclooctyl group;
X1 and X2 independently of each other are anionic ligands;
Y1 is hydrogen, C1-6-alkyl, C3-8-cycloalkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkoxy, C2-6-alkenyloxy, C2-6-alkynyloxy, aryloxy, C1-6-alkoxycarbonyl, C1-6-alkylthio, aryl, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl;
a, b, c and d independently of each other have the meaning of hydrogen, C1-6-alkyl, halogen-C1-6-alkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkoxy, C2-6-alkenyloxy, C2-6-alkynyloxy, C1-6-alkylcarbonyl, aryl, hydroxy, aryloxy, nitro, C1-6-alkoxycarbonyl, amino, mono-C1-6-alkyl-or di-C1-6-alkylamino, halogen, thio, C1-6-alkylthio, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl, arylsulfonyl, SO3H, C1-6-alkylcarbonyl amino, aryl carbonyl amino, C1-6-alkyl sulfonyl amino, aryl sulfonyl amino, halogen-C1-6-alkyl sulfonyl amino, SO3-C1-6-alkyl or OSi(C1-6-alkyl)3 and SO2-NR'R" wherein R' and R" independently of each other have the meaning of hydrogen, aryl or C1-6-alkyl or R' and R" together with the N atom form a cycle;
R1 and R2 independently of each other are hydrogen, C1-6-alkyl, C3-8-cycloalkyl, aryl, aryl-C1-6-alkyl or
R1 and R2 together with the N atom form a 5 to 8 member cycle which may contain nitrogen, oxygen or sulfur as additional hetero atom;
R3' and R3" independently of each other are hydrogen, C1-6-alkyl, C3-8-cycloalkyl, aryl, aryl-C1-6-alkyl,
comprising the conversion of a Ru precursor compound of the formula II
Y2 and Y3 independently of each other are hydrogen, C1-6-alkyl, C2-6-alkenyl, C2-6-alkynyl, C1-6-alkylthio, aryl, arylthio, C1-6-alkylsulfonyl, C1-6-alkylsulfinyl,
or Y2 and Y3 taken together form a cycle of the type
or
Y2 and Y3 together form a cumulenyl group of the type
with a preligand of the formula III
Rx and Ry independently of each other denote hydrogen, C1-6-alkyl optionally substituted by one or more halogen atoms or aryl optionally substituted by one or more halogen atoms or by C1-6-alkyl. - Process of claim 1, characterized in that X1 and X2 in the Ru precursor compound of the formula II stand for a halogenide or a pseudo halogenide.
- Process of claim 1, characterized in that R4a, R4b, R4c, R4d, R4e stand for hydrogen, methyl or for a halogen atom.
- Process of claims 1 to 5, characterized in that the conversion is performed in an inert organic solvent at a temperature of 0°C to 100°C.
- Process of claim 6, characterized in that the inert organic solvent is an aromatic solvent, a halogenated aromatic solvent, a halogenated hydrocarbon and mixtures thereof or a mixture of said solvents with an aliphatic hydrocarbon.
- Process of claim 1, characterized in that the compounds of formula I are selected from
[RuCl2(=CH(o-OCH(Me)CONEt2)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH(Me)CONH2)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH(Me)CO-N Morpholine)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH(Me)CONHPh)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH(Me)CO-N-Pyrrolidine)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH(Me)CO-N-Pyrrolidine)Ph)(PCy3)] [RuCl2(=CH(o-OCH(Me)CO-N Pyrrolidine)Ph)(SIPrNap)] [RuCl2(=CH(o-OCMe2CO-N-Pyrrolidine)Ph)(ImH2Mes)] [RuCl2(=CH(o-OCH2CO-N-Pyrrolidine)Ph)(ImH2Mes)]
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